/**
 * Tree.java is created by Zachariah at 2012-1-19 上午10:07:15
 */
package com.zack.designPattern.composite;

/**
 * @author zachariah zzcfrog@gmail.com
 *
 */
public abstract class Tree {

	public Tree(){}
	
	public Tree(String val){
		this.val = val;
	}
	protected String val;
	
	public abstract String getValue();
}
